Sash lock



NSV. 17, 1936.

J. M. TRACY SASH LOCK Filed Feb.v 7, 195e 00A/4N M. rRAcY ATTORNEYS Patented Nov. 17, 1936 UNITED STTES ATENT OFFICE SASH LOCK .lohn M. Tracy, New Britain, Conn., assigner to The American Hardware Corporation, New Britain, Conn., a corporation of Connecticut Application February 7, 1936, Serial No. 62,722

6 Claims.

My invention relates to a sash lock. It is an object of the invention to provide a sash lock which is self-loc king when the sashes are moved to relatively closed position.

It is ano-ther object to provide a sash lock in vwhich one of the locking parts is moved to and held in inoperative position when the sash is being raised and lowere d and automatically moved into operative and locking position when the sash is substantially completely closed.

It is a further object to provide a sash lock having means to be engaged lowering the sash.

for raising as well as tion- Fig.'l is a fragmentary top plan view of an upper and lower sash illustrating one form of my improved sash lock applied thereto;

Fig. 2 is sashes shown in Fig.

a vertical sectional view l and showing the imthrough the proved sash lock, parts being broken away to illustrate interior construction; and

Fig. 3

is a view of the parts shown in Fig. 2

but in different relative positions and showing the sashes unlocked and se parated.

In said drawing 5 indicates the lower portion of an upper sash, while upper section of a lower t indicates the adjacent sash. The improved sash lock vincludes a keeper and locking member to be attached to the sash parts and one of the members is movably mounted so as to be moved into interlocking engagement with the other of said parts and automatically when the sash parts are moved to closed position.

In the form shown a keeper 'l is attached to the upper sash 5 and is provided with a keeper portion 8. 'Ihe part 5 by suitable means,

keeper 'l is attached to the sash such as screws 9 9,

as will be understood. The other sash section, in this case the lower sash 6, carries adjacent the keeper member l, a which may be secured to means of screws ||-II. member l2 having an upt bracket member I0, the lower sash as by A substantial hook urned hooked locking nose at its inner end is pivotally mounted in the bracket on the horizontal pivot pin I3 extending through the hook into the the bracket Ill.

position shown in the keeper portion 6 will be ineffective, since side plates llllll of When the hook i2 is in the Fig. 2, that is, engaged with 8, an attempt to raise the sash the upturned nose of the hook engages beneath and behind the keeper part 8. The hook member l2 is provided with an outwardly extending extension or handle member l5, preferably having an eye l therein for engagement by a projection on a window pole l1, as will 5 be understood. When the hook extension l5 is raised either by hand or the window pole il, it will be seen that the hook i2 will be withdrawn from the keeper 8 and moved to the position shown in Fig. 3, that is, so that the lower sash 10 may be raised.

In order to provide for automatic locking of the sash lock when the window is lowered I provide means for holding the hook i2 in inoperative position while the lower sash is in raised position. In the form illustrated I employ a latch l5, pivotally mounted on a horizontal pin I9, carried by the hook member i2. The latch is provided with a latching surface or shoulder 2li, to automatically engage behind the latching 20 abutment 2l carried by the bracket l0, so as to hold the hook retracted in the inoperative position shown in Fig. 3 when the window is opened. Thus, when the hook I2 is held in the inoperative position of Fig. 3 the lower sash may be both 25 raised and lowered in the usual manner or by means of the handle extension l5 engaged by a window pole. The latch i8, in addition to its latchin'g parts, has a releasing nose 22, positioned as shown in Fig. 3, to be engaged by the topcamming surface 23 of the keeper l when the lower sash is lowered. Thus it will be clear that when the lower sash is lowered the nose 22 will ride on the surface 23 and cause the latching shoulder 2D to be automatically disengaged from thelatch- 35 ing abutment 2| and the hook I2 will then move through the action of gravity or otherwise into hooking or interlocking engagement with the keeper part 8. When gravity is relied upon, the handle portion I5 and the locking means should 40 be sufficiently heavy to cause the locking device to swing from the position shown in Fig. 3 to the v locking position shown in Fig. 2 when the latch i8 is released from the abutment 2l.

In the preferred form illustrated I employ two latch members I8 and abutments 2| at opposite sides of the hook l2, as will be seen in Fig. 1, but since the latches are preferably duplicates of each other onlyv one has been fully shown in detail and specifically described.

It will be seen that with my improved sash lock the unlocking of the sashes is eiected with the greatest of ease merely by raising the handle extension l5 so as to withdraw the hook from the keeper 8. The extension l5 as described may 55 be employed for raising the lower sash. When the extension I5 has been moved so as to withdraw the hook I2, the latter is automatically latched by means of the latch I8 in its retracted or unlocked position, as shown in Fig. 3. When the lower sash is lowered, either by means of the hook extension I5 or otherwise, the nose 22 of the latch I8 will engage the keeper part 23 and release the hook so that it may move into locking position behind the keeper part 8 and thus can securely lock the sash parts relatively to each other.

While the invention has been described in considerable detail and a preferred form illustrated, it is to be understood that various changes may be made within the scope of the invention as dened in the appended claims.

I claim:

l. A self locking window lock comprising, a bracket to be attached to a lower sash, a hook member pivotally mounted on said bracket and engageable with a keeper on an upper sash to interlock therewith for preventing raising of said lower sash relatively to said upper sash, and an integral handle member on said hook for raising and lowering the lower sash, and latching means for latching said hook member in inoperative position When said lower sash is raised by said handle, said latching means being engageable by sai-d keeper for releasing said hook member when said lower sash is moved to closed position relatively to said upper sash.

2. A window lock comprising, a bracket to be attached to a lower sash, a pivotally mounted hook member carried by said bracket and interengageable with a keeper on an upper sash for locking said sashes in closed position, an extension of said hook member having an eye therein for engagement by a window pole for raising and lowering said lower sash, and latch means for latching said hook member in inoperative position when the same is moved to unlocked position by a window pole and whereby said lower sash may be both raised and lowered by a window pole with said hook member held in inoperative position, said latching means being released by and upon engagement with said keeper when said lower sash is moved to substantially its lowest position relatively to said upper sash..

3. In a window lock, a movable locking member, a bracket therefor to be carried by one window sash, a horizontal pivotal support on said bracket supporting said member intermediate its ends, an upturned hooked locking nose at the inner end of said member for engagement with and disengagement from a keeper carried by an adjacent sash, an operating handle at the opposite end of said member, and means for automatically latching said member in its disengaged position when the Window is opened.

4. In a Window lock, a movable locking member, a bracket therefor to be carried by one Window sash, a horizontal pivotal support on said bracket supporting said member intermediate its ends, an upturned hooked locking nose at the inner end of said member for engagement with and disengagement from a keeper carried by an adjacent sash, an operating handle at the opposite end of said member, means for latching s aid member in its -disengaged position when the window is open, said latching means being released automatically by engagement with said keeper upon the closing movement of said window to permit said member to move into window locking position.

5. In a window lock, a movable locking member, a bracket therefor to be carried by one window sash, a horizontal pivotal support on said bracket supporting said member intermediate its e-nds, an upturned hooked locking nose at the inner end of said member for engagement with and disengagement from a keeper carried by an adjacent sash, an operating handle at the opposite end of said member, with means for normally urging said member in a window locking direction, said means comprising a suiciently heavy handle end to overbalance the hooked locking end.

6. In a window lock, a movable locking member, a bracket therefor to be carried by one window sash, a horizontal pivotal support on said bracket supporting said member intermediate its ends, an upturned hooked locking nose at the inner end of said member for engagement with and disengagement from a keeper carried by an adjacent sash, an operating handle at the opposite end of said member, means for latching said member in its disengaged position when the window is open, said latching means being carried by said locking member and movable into latching engagement with said bracket when said locking member has been manually disengaged from said keeper preparatory to permitting the opening of the window.

JOHN M. TRACY. 

